# Reference

> Lookup pages for APIANT.ai, covering MCP tools, Claude Code skills, the app catalog feed, limits, public URLs, terms and changes.

The reference pages list the exact names, values and URL shapes that the guides describe in plain English. The MCP tool and skill lists are generated from the APIANT.ai source code.

## Reference pages

| Page | What it lists |
|---|---|
| [MCP tools](/docs/reference/mcp-tools) | The MCP tools Claude can call on your account, grouped by family, and which of them the assistant also uses. |
| [Claude Code skills](/docs/reference/skills) | The skills in the Claude Code plugin, described as the work you can ask Claude to do. |
| [App catalog](/docs/reference/apps) | How the app catalog is organized, and the public feed that returns apps with their triggers and actions. |
| [Limits](/docs/reference/limits) | Engine limits such as timeouts and payload sizes, and the plan quotas that apply to your account. |
| [Public URLs](/docs/reference/urls) | The URL shapes APIANT.ai gives you (webhooks, web services, forms, chat widgets, approval links, MCP) and what protects each one. |
| [Glossary](/docs/reference/glossary) | Definitions of the terms used across these docs. |
| [Changelog](/docs/reference/changelog) | Where changes are recorded, and how to update the Claude Code skills. |

## Tool and skill names

The guides tell you what to ask Claude or the assistant, and never ask you to type a tool name. Tool names appear only on the [MCP tools](/docs/reference/mcp-tools) page, for reading Claude's output or reviewing what Claude did on your account.

## Next steps

- [Core concepts](/docs/concepts)
- [APIANT over MCP](/docs/mcp)
- [Plans, usage and billing](/docs/account/plans-and-limits)